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@ -2,7 +2,7 @@
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#
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# Originally part of vpnc source code:
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# © 2005-2012 Maurice Massar, Jörg Mayer, Antonio Borneo et al.
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# © 2009-2012 David Woodhouse <dwmw2@infradead.org>
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# © 2009-2022 David Woodhouse <dwmw2@infradead.org>, Daniel Lenski <dlenski@gmail.com> et al.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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@ -22,31 +22,37 @@
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#
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# List of parameters passed through environment
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#* reason -- why this script was called, one of: pre-init connect disconnect reconnect attempt-reconnect
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#* VPNGATEWAY -- vpn gateway address (always present)
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#* VPNGATEWAY -- VPN gateway address (always present)
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#* VPNPID -- PID of the process controlling the VPN (OpenConnect v9.0+)
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#* TUNDEV -- tunnel device (always present)
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#* IDLE_TIMEOUT -- gateway's idle timeout in seconds (OpenConnect v8.06+); unused
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#* LOG_LEVEL -- log level; ERROR=0, INFO=1, DEBUG=2, TRACE=3 (OpenConnect v9.0+)
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#* INTERNAL_IP4_ADDRESS -- address (always present)
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#* INTERNAL_IP4_MTU -- mtu (often unset)
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#* INTERNAL_IP4_MTU -- MTU (often unset)
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#* INTERNAL_IP4_NETMASK -- netmask (often unset)
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#* INTERNAL_IP4_NETMASKLEN -- netmask length (often unset)
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#* INTERNAL_IP4_NETADDR -- address of network (only present if netmask is set)
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#* INTERNAL_IP4_DNS -- list of dns servers
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#* INTERNAL_IP4_NBNS -- list of wins servers
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#* INTERNAL_IP4_DNS -- list of DNS servers
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#* INTERNAL_IP4_NBNS -- list of WINS servers
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#* INTERNAL_IP6_ADDRESS -- IPv6 address
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#* INTERNAL_IP6_NETMASK -- IPv6 netmask
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#* INTERNAL_IP6_DNS -- IPv6 list of dns servers
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#* CISCO_DEF_DOMAIN -- default domain name
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#* CISCO_BANNER -- banner from server
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#* CISCO_SPLIT_DNS -- dns search domain list
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#* CISCO_SPLIT_DNS -- DNS search domain list
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#* CISCO_SPLIT_INC -- number of networks in split-network-list
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#* CISCO_SPLIT_INC_%d_ADDR -- network address
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#* CISCO_SPLIT_INC_%d_MASK -- subnet mask (for example: 255.255.255.0)
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#* CISCO_SPLIT_INC_%d_MASKLEN -- subnet masklen (for example: 24)
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#* CISCO_SPLIT_INC_%d_PROTOCOL -- protocol (often just 0)
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#* CISCO_SPLIT_INC_%d_SPORT -- source port (often just 0)
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#* CISCO_SPLIT_INC_%d_DPORT -- destination port (often just 0)
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#* CISCO_SPLIT_INC_%d_PROTOCOL -- protocol (often just 0); unused
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#* CISCO_SPLIT_INC_%d_SPORT -- source port (often just 0); unused
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#* CISCO_SPLIT_INC_%d_DPORT -- destination port (often just 0); unused
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#* CISCO_IPV6_SPLIT_INC -- number of networks in IPv6 split-network-list
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#* CISCO_IPV6_SPLIT_INC_%d_ADDR -- IPv6 network address
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#* CISCO_IPV6_SPLIT_INC_$%d_MASKLEN -- IPv6 subnet masklen
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#
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# The split tunnel variables above have *_EXC* counterparts for network
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# addresses to be excluded from the VPN tunnel.
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# FIXMEs:
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@ -60,20 +66,20 @@
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# 2) There are two different functions to set routes: generic routes and the
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# default route. Why isn't the defaultroute handled via the generic route case?
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# 3) In the split tunnel case, all routes but the default route might get replaced
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# without getting restored later. We should explicitely check and save them just
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# without getting restored later. We should explicitly check and save them just
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# like the defaultroute
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# 4) Replies to a dhcp-server should never be sent into the tunnel
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# Section B: Split DNS handling
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# 1) Maybe dnsmasq can do something like that
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# 2) Parse dns packets going out via tunnel and redirect them to original dns-server
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# 2) Parse DNS packets going out via tunnel and redirect them to original DNS-server
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# ======== For test logging (CI/CD will uncomment automatically) =========
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#TRACE# echo "------------------"
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#TRACE# echo "vpnc-script environment:"
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#TRACE# env | egrep '^(CISCO_|INTERNAL_IP|VPNGATEWAY|TUNDEV|reason)' | sort
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#TRACE# env | grep -E '^(CISCO_|INTERNAL_IP|VPNGATEWAY|TUNDEV|IDLE_TIMEOUT|reason)' | sort
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#TRACE# echo "------------------"
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#TRACE# set -x
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@ -84,9 +90,22 @@ PATH=/sbin:/usr/sbin:$PATH
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OS="`uname -s`"
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HOOKS_DIR=/etc/vpnc
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DEFAULT_ROUTE_FILE=/var/run/vpnc/defaultroute.${PPID}
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DEFAULT_ROUTE_FILE_IPV6=/var/run/vpnc/defaultroute_ipv6.${PPID}
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RESOLV_CONF_BACKUP=/var/run/vpnc/resolv.conf-backup
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# Use the PID of the controlling process (vpnc or OpenConnect) to
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# uniquely identify this VPN connection. Normally, the parent process
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# is a shell, and the grandparent's PID is the relevant one.
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# OpenConnect v9.0+ provides VPNPID, so we don't need to determine it.
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if [ -z "$VPNPID" ]; then
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VPNPID=$PPID
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PCMD=`ps -c -o cmd= -p $PPID`
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case "$PCMD" in
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*sh) VPNPID=`ps -o ppid= -p $PPID` ;;
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esac
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fi
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DEFAULT_ROUTE_FILE=/var/run/vpnc/defaultroute.${VPNPID}
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DEFAULT_ROUTE_FILE_IPV6=/var/run/vpnc/defaultroute_ipv6.${VPNPID}
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RESOLV_CONF_BACKUP=/var/run/vpnc/resolv.conf-backup.${VPNPID}
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SCRIPTNAME=`basename $0`
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# some systems, eg. Darwin & FreeBSD, prune /var/run on boot
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@ -102,7 +121,7 @@ else
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fi
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if [ "$OS" = "Linux" ]; then
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IPROUTE="`which ip 2> /dev/null | grep '^/'`"
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IPROUTE="`command -v ip | grep '^/'`"
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ifconfig_syntax_ptp="pointopoint"
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route_syntax_gw="gw"
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route_syntax_del="del"
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@ -111,10 +130,10 @@ if [ "$OS" = "Linux" ]; then
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route_syntax_inet6_host="-6"
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route_syntax_inet6_net="-6"
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ifconfig_syntax_add_inet6="add"
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ifconfig_syntax_del="del"
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ifconfig_syntax_del() { case "$1" in *:*) echo del "$1" ;; *) echo 0.0.0.0 ;; esac; }
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netstat_syntax_ipv6="-6"
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else
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# iproute2 is Linux only; if `which ip` returns something on another OS, it's likely an unrelated tool
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# iproute2 is Linux only; if `command -v ip` returns something on another OS, it's likely an unrelated tool
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# (see https://github.com/dlenski/openconnect/issues/132#issuecomment-470475009)
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IPROUTE=""
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ifconfig_syntax_ptp=""
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@ -124,7 +143,7 @@ else
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route_syntax_inet6="-inet6"
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route_syntax_inet6_host="-inet6 -host"
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route_syntax_inet6_net="-inet6 -net"
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ifconfig_syntax_del="delete"
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ifconfig_syntax_del() { case "$1" in *:*) echo inet6 "$1" delete ;; *) echo "$1" delete ;; esac; }
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ifconfig_syntax_add_inet6="inet6"
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netstat_syntax_ipv6="-f inet6"
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fi
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@ -136,11 +155,13 @@ else
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ifconfig_syntax_ptpv6=""
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fi
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grep '^hosts' /etc/nsswitch.conf 2>/dev/null|grep resolve >/dev/null 2>&1 && command systemd-resolve --status >/dev/null 2>&1
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RESOLVEDENABLED=0
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grep '^hosts' /etc/nsswitch.conf 2>/dev/null|grep resolve >/dev/null 2>&1
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if [ $? = 0 ];then
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RESOLVEDENABLED=1
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else
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RESOLVEDENABLED=0
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command resolvectl status >/dev/null 2>&1 || command systemd-resolve --status >/dev/null 2>&1
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if [ $? = 0 ];then
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RESOLVEDENABLED=1
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fi
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fi
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if [ -r /etc/openwrt_release ] && [ -n "$OPENWRT_INTERFACE" ]; then
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@ -156,8 +177,8 @@ elif [ -x /usr/bin/busctl ] && [ ${RESOLVEDENABLED} = 1 ]; then
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# For systemd-resolved (version 229 and above)
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MODIFYRESOLVCONF=modify_resolved_manager_old
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RESTORERESOLVCONF=restore_resolved_manager_old
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elif [ -x /sbin/resolvconf ] && [ `basename $(readlink /sbin/resolvconf)` != resolvectl ]; then
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# Optional tool on Debian, Ubuntu, Gentoo and FreeBSD
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elif [ -x /sbin/resolvconf ] && [ "`basename $(readlink /sbin/resolvconf) 2> /dev/null`" != resolvectl ]; then
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# Optional tool on Debian, Ubuntu, Gentoo, FreeBSD and DragonFly BSD
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# (ignored if symlink to resolvctl, created by some versions of systemd-resolved)
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MODIFYRESOLVCONF=modify_resolvconf_manager
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RESTORERESOLVCONF=restore_resolvconf_manager
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@ -174,6 +195,10 @@ elif [ -x /sbin/modify_resolvconf ]; then
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elif [ -x /usr/sbin/unbound-control ] && /usr/sbin/unbound-control status > /dev/null 2>&1; then
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MODIFYRESOLVCONF=modify_resolvconf_unbound
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RESTORERESOLVCONF=restore_resolvconf_unbound
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elif [ -x /usr/sbin/rcctl ] && /usr/sbin/rcctl check resolvd >/dev/null; then
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# OpenBSD's resolvd by sending route messages
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MODIFYRESOLVCONF=modify_resolvconf_resolvd
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RESTORERESOLVCONF=restore_resolvconf_resolvd
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else # Generic for any OS
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MODIFYRESOLVCONF=modify_resolvconf_generic
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RESTORERESOLVCONF=restore_resolvconf_generic
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@ -186,9 +211,9 @@ run_hooks() {
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HOOK="$1"
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if [ -d ${HOOKS_DIR}/${HOOK}.d ]; then
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for script in ${HOOKS_DIR}/${HOOK}.d/* ; do
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[ -f $script ] && . $script
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done
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for script in ${HOOKS_DIR}/${HOOK}.d/* ; do
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[ -f $script ] && . $script
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done
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fi
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}
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@ -223,56 +248,47 @@ do_ifconfig() {
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# If the netmask is provided, it contains the address _and_ netmask
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if [ -n "$INTERNAL_IP6_ADDRESS" ] && [ -z "$INTERNAL_IP6_NETMASK" ]; then
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INTERNAL_IP6_NETMASK="$INTERNAL_IP6_ADDRESS/128"
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INTERNAL_IP6_NETMASK="$INTERNAL_IP6_ADDRESS/128"
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fi
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if [ -n "$INTERNAL_IP6_NETMASK" ]; then
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if [ -n "$IPROUTE" ]; then
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$IPROUTE -6 addr add $INTERNAL_IP6_NETMASK dev $TUNDEV
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else
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# Unlike for Legacy IP, we don't specify the dest_address
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# here on *BSD. OpenBSD for one will refuse to accept
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# incoming packets to that address if we do.
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# OpenVPN does the same (gives dest_address for Legacy IP
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# but not for IPv6).
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# Only Solaris needs it; hence $ifconfig_syntax_ptpv6
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ifconfig "$TUNDEV" $ifconfig_syntax_add_inet6 $INTERNAL_IP6_NETMASK $ifconfig_syntax_ptpv6 mtu $MTU up
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fi
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if [ -n "$IPROUTE" ]; then
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$IPROUTE -6 addr add $INTERNAL_IP6_NETMASK dev $TUNDEV
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else
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# Unlike for Legacy IP, we don't specify the dest_address
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# here on *BSD. OpenBSD for one will refuse to accept
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# incoming packets to that address if we do.
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# OpenVPN does the same (gives dest_address for Legacy IP
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# but not for IPv6).
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# Only Solaris needs it; hence $ifconfig_syntax_ptpv6
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ifconfig "$TUNDEV" $ifconfig_syntax_add_inet6 $INTERNAL_IP6_NETMASK $ifconfig_syntax_ptpv6 mtu $MTU up
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fi
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fi
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}
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destroy_tun_device() {
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case "$OS" in
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NetBSD|OpenBSD) # and probably others...
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ifconfig "$TUNDEV" destroy
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;;
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FreeBSD)
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ifconfig "$TUNDEV" destroy > /dev/null 2>&1 &
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;;
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esac
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}
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# =========== route handling ====================================
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if [ -n "$IPROUTE" ]; then
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fix_ip_get_output () {
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sed -e 's/ /\n/g' | \
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sed -ne "1 s|\$|${1}|p;/via/{N;p};/dev/{N;p};/src/{N;p};/mtu/{N;p};/metric/{N;p}"
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sed -ne "1 s|\$|${1}|p;/via/{N;p};/dev/{N;p};/src/{N;p};/mtu/{N;p};/metric/{N;p};/onlink/{p}"
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}
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set_vpngateway_route() {
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$IPROUTE route add `$IPROUTE route get "$VPNGATEWAY" | fix_ip_get_output`
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$IPROUTE route flush cache 2>/dev/null
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}
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# returns all routes to a destination *except* those through $TUNDEV,
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# sorted by increasing metric (with absent metric as last)
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list_non_loopback_routes () {
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echo "$1" | grep -q : && FAMILY=-6 ROOT=::/0 || FAMILY=-4 ROOT=0/0
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# put metric in front, sort by metric, then chop off first two fields (metric and destination)
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$IPROUTE $FAMILY route show to "$1" root "$ROOT" |
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awk '/dev '"$TUNDEV"'/ { next; } { printf "%s %s\n", (match($0, /metric ([^ ]+)/) ? substr($0, RSTART+7, RLENGTH-7) : 4294967295), $0; }' |
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sort -n | cut -d' ' -f3-
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}
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set_vpngateway_route_attempt_reconnect() {
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set_vpngateway_route() {
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# We'll attempt to add a host route to the gateway through every route that matches
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# its address (excluding those through TUNDEV because the goal is to avoid loopback).
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echo "$VPNGATEWAY" | grep -q : && FAMILY=-6 || FAMILY=-4
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echo "$VPNGATEWAY" | grep -q : && FAMILY=-6 ROOT=::/0 || FAMILY=-4 ROOT=0/0
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|
|
# put metric in front, sort by metric, then chop off first two fields (metric and destination)
|
|
|
|
|
$IPROUTE $FAMILY route show to "$VPNGATEWAY" root "$ROOT" |
|
|
|
|
|
awk '/dev '"$TUNDEV"'/ { next; } { printf "%s %s\n", (match($0, /metric ([^ ]+)/) ? substr($0, RSTART+7, RLENGTH-7) : 4294967295), $0; }' |
|
|
|
|
|
sort -n | cut -d' ' -f3- |
|
|
|
|
|
list_non_loopback_routes "$VPNGATEWAY" |
|
|
|
|
|
while read LINE ; do
|
|
|
|
|
# We do not want to use 'replace', since a route to the gateway that already
|
|
|
|
|
# exists is mostly likely the correct one (e.g. the case of a reconnect attempt
|
|
|
|
@ -280,7 +296,7 @@ if [ -n "$IPROUTE" ]; then
|
|
|
|
|
$IPROUTE $FAMILY route add `echo "$VPNGATEWAY $LINE" | fix_ip_get_output` 2>/dev/null
|
|
|
|
|
done
|
|
|
|
|
$IPROUTE $FAMILY route flush cache 2>/dev/null
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
del_vpngateway_route() {
|
|
|
|
|
$IPROUTE route $route_syntax_del "$VPNGATEWAY"
|
|
|
|
@ -313,13 +329,19 @@ if [ -n "$IPROUTE" ]; then
|
|
|
|
|
NETWORK="$1"
|
|
|
|
|
NETMASK="$2"
|
|
|
|
|
NETMASKLEN="$3"
|
|
|
|
|
$IPROUTE route add `$IPROUTE route get "$NETWORK" | fix_ip_get_output "/$NETMASKLEN"`
|
|
|
|
|
$IPROUTE route flush cache 2>/dev/null
|
|
|
|
|
|
|
|
|
|
echo "$1" | grep -q : && FAMILY=-6 || FAMILY=-4
|
|
|
|
|
|
|
|
|
|
list_non_loopback_routes "$NETWORK/$NETMASKLEN" |
|
|
|
|
|
while read LINE ; do
|
|
|
|
|
$IPROUTE $FAMILY route add `echo "$NETWORK/$NETMASKLEN $LINE" | fix_ip_get_output` 2>/dev/null
|
|
|
|
|
done
|
|
|
|
|
$IPROUTE $FAMILY route flush cache 2>/dev/null
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
del_exclude_route() {
|
|
|
|
|
# FIXME: In theory, this could delete existing routes which are
|
|
|
|
|
# identical to split-exclude routes specificed by VPNGATEWAY
|
|
|
|
|
# identical to split-exclude routes specified by VPNGATEWAY
|
|
|
|
|
NETWORK="$1"
|
|
|
|
|
NETMASK="$2"
|
|
|
|
|
NETMASKLEN="$3"
|
|
|
|
@ -360,21 +382,18 @@ if [ -n "$IPROUTE" ]; then
|
|
|
|
|
else
|
|
|
|
|
$IPROUTE -6 route replace "$NETWORK/$NETMASKLEN" dev "$NETDEV"
|
|
|
|
|
fi
|
|
|
|
|
$IPROUTE route flush cache 2>/dev/null
|
|
|
|
|
$IPROUTE -6 route flush cache 2>/dev/null
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
set_ipv6_exclude_route() {
|
|
|
|
|
# add explicit route to keep current routing for this target
|
|
|
|
|
# (keep traffic separate from VPN tunnel)
|
|
|
|
|
NETWORK="$1"
|
|
|
|
|
NETMASKLEN="$2"
|
|
|
|
|
$IPROUTE -6 route add `$IPROUTE route get "$NETWORK" | fix_ip_get_output "/$NETMASKLEN"`
|
|
|
|
|
$IPROUTE route flush cache 2>/dev/null
|
|
|
|
|
set_exclude_route "$NETWORK" nomask "$NETMASKLEN"
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
reset_ipv6_default_route() {
|
|
|
|
|
$IPROUTE -6 route del default dev "$TUNDEV"
|
|
|
|
|
$IPROUTE route flush cache 2>/dev/null
|
|
|
|
|
$IPROUTE -6 route flush cache 2>/dev/null
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
del_ipv6_network_route() {
|
|
|
|
@ -387,7 +406,7 @@ if [ -n "$IPROUTE" ]; then
|
|
|
|
|
|
|
|
|
|
del_ipv6_exclude_route() {
|
|
|
|
|
# FIXME: In theory, this could delete existing routes which are
|
|
|
|
|
# identical to split-exclude routes specificed by VPNGATEWAY
|
|
|
|
|
# identical to split-exclude routes specified by VPNGATEWAY
|
|
|
|
|
NETWORK="$1"
|
|
|
|
|
NETMASKLEN="$2"
|
|
|
|
|
$IPROUTE -6 route del "$NETWORK/$NETMASKLEN"
|
|
|
|
@ -395,12 +414,12 @@ if [ -n "$IPROUTE" ]; then
|
|
|
|
|
}
|
|
|
|
|
else # use route command
|
|
|
|
|
get_default_gw() {
|
|
|
|
|
# isn't -n supposed to give --numeric output?
|
|
|
|
|
# apperently not...
|
|
|
|
|
# Get rid of lines containing IPv6 addresses (':')
|
|
|
|
|
# Get rid of lines for link-local routes (https://superuser.com/a/1067742)
|
|
|
|
|
# Get rid of lines containing $TUNDEV (we don't want loopback)
|
|
|
|
|
netstat -r -n | awk '/:/ { next; } /link\#/ { next; } /\s'"$TUNDEV"'(\s|$)/ { next; } /^(default|0\.0\.0\.0)/ { print $2; exit; }'
|
|
|
|
|
# Intended behavior, starting with `netstat -r -n` output:
|
|
|
|
|
# - keep lines starting with 'default' or '0.0.0.0', but exclude bogus routes '0.0.0.0/nn' where nn != 0
|
|
|
|
|
# - remove lines containing IPv6 addresses (':')
|
|
|
|
|
# - remove lines for link-local routes (https://superuser.com/a/1067742)
|
|
|
|
|
# - remove lines containing $TUNDEV (we don't want loopback)
|
|
|
|
|
netstat -r -n | awk '/:/ { next; } /link#/ { next; } /[[:space:]]'"$TUNDEV"'([[:space:]]|$)/ { next; } /^(default|0\.0\.0\.0([[:space:]]|\/0))/ { print $2; exit; }'
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
set_vpngateway_route() {
|
|
|
|
@ -413,10 +432,6 @@ else # use route command
|
|
|
|
|
esac
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
set_vpngateway_route_attempt_reconnect() {
|
|
|
|
|
set_vpngateway_route
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
del_vpngateway_route() {
|
|
|
|
|
case "$VPNGATEWAY" in
|
|
|
|
|
*:*) route $route_syntax_del $route_syntax_inet6_host "$VPNGATEWAY" $route_syntax_gw "`get_ipv6_default_gw`";;
|
|
|
|
@ -447,8 +462,10 @@ else # use route command
|
|
|
|
|
NETWORK="$1"
|
|
|
|
|
NETMASK="$2"
|
|
|
|
|
NETMASKLEN="$3"
|
|
|
|
|
DEFAULTGW="${DEFAULTGW:-`get_default_gw`}"
|
|
|
|
|
if [ -z "$DEFAULTGW" ]; then
|
|
|
|
|
DEFAULTGW="`get_default_gw`"
|
|
|
|
|
echo "cannot find route for exclude route $NETWORK/$NETMASKLEN, ignoring" >&2
|
|
|
|
|
return
|
|
|
|
|
fi
|
|
|
|
|
# Add explicit route to keep traffic for this target separate
|
|
|
|
|
# from tunnel. FIXME: We use default gateway - this is our best
|
|
|
|
@ -486,10 +503,13 @@ else # use route command
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
get_ipv6_default_gw() {
|
|
|
|
|
# isn't -n supposed to give --numeric output?
|
|
|
|
|
# apperently not...
|
|
|
|
|
# Intended behavior, starting with `netstat -r -n` IPv6 output:
|
|
|
|
|
# - keep lines starting with 'default' or '::'
|
|
|
|
|
# - append %$interface to link-local routes (fe80::/10)
|
|
|
|
|
# - remove lines for loopback interface (lo)
|
|
|
|
|
# - remove lines containing $TUNDEV (we don't want loopback)
|
|
|
|
|
# FIXME: is there a better way to exclude loopback routes than filtering interface /^lo/?
|
|
|
|
|
netstat -r -n $netstat_syntax_ipv6 | awk '/^(default|::\/0)/ { if ($NF!~/^lo/) { print ($2~/^fe[89ab]/ ? $2"%"$NF : $2); } }'
|
|
|
|
|
netstat -r -n $netstat_syntax_ipv6 | awk '/^(default|::\/0)/ { if ($NF!~/^lo/ && $NF!~/'"$TUNDEV"'([[:space:]]|$)/) { print ($2~/^fe[89ab]/ ? $2"%"$NF : $2); } }'
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
set_ipv6_default_route() {
|
|
|
|
@ -519,10 +539,15 @@ else # use route command
|
|
|
|
|
set_ipv6_exclude_route() {
|
|
|
|
|
NETWORK="$1"
|
|
|
|
|
NETMASK="$2"
|
|
|
|
|
IPV6DEFAULTGW="${IPV6DEFAULTGW:-`get_ipv6_default_gw`}"
|
|
|
|
|
if [ -z "$IPV6DEFAULTGW" ]; then
|
|
|
|
|
echo "cannot find route for exclude route $NETWORK/$NETMASKLEN, ignoring" >&2
|
|
|
|
|
return
|
|
|
|
|
fi
|
|
|
|
|
# Add explicit route to keep traffic for this target separate
|
|
|
|
|
# from tunnel. FIXME: We use default gateway - this is our best
|
|
|
|
|
# guess in absence of "ip" command to query effective route.
|
|
|
|
|
route add $route_syntax_inet6_net "$NETWORK/$NETMASK" "`get_ipv6_default_gw`" $route_syntax_interface
|
|
|
|
|
route add $route_syntax_inet6_net "$NETWORK/$NETMASK" "$IPV6DEFAULTGW" $route_syntax_interface
|
|
|
|
|
:
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
@ -881,30 +906,24 @@ restore_resolvconf_unbound() {
|
|
|
|
|
fi
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
# ========= Toplevel state handling =======================================
|
|
|
|
|
# === resolv.conf handling via resolvd =========
|
|
|
|
|
|
|
|
|
|
kernel_is_2_6_or_above() {
|
|
|
|
|
case `uname -r` in
|
|
|
|
|
1.*|2.[012345]*)
|
|
|
|
|
return 1
|
|
|
|
|
;;
|
|
|
|
|
*)
|
|
|
|
|
return 0
|
|
|
|
|
;;
|
|
|
|
|
esac
|
|
|
|
|
modify_resolvconf_resolvd() {
|
|
|
|
|
/sbin/route nameserver $TUNDEV $INTERNAL_IP4_DNS $INTERNAL_IP6_DNS
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
restore_resolvconf_resolvd() {
|
|
|
|
|
/sbin/route nameserver $TUNDEV
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
# ========= Toplevel state handling =======================================
|
|
|
|
|
|
|
|
|
|
do_pre_init() {
|
|
|
|
|
if [ "$OS" = "Linux" ]; then
|
|
|
|
|
if (exec 6< /dev/net/tun) > /dev/null 2>&1 ; then
|
|
|
|
|
:
|
|
|
|
|
else # can't open /dev/net/tun
|
|
|
|
|
test -e /proc/sys/kernel/modprobe && `cat /proc/sys/kernel/modprobe` tun 2>/dev/null
|
|
|
|
|
# fix for broken devfs in kernel 2.6.x
|
|
|
|
|
if [ "`readlink /dev/net/tun`" = misc/net/tun \
|
|
|
|
|
-a ! -e /dev/net/misc/net/tun -a -e /dev/misc/net/tun ] ; then
|
|
|
|
|
ln -sf /dev/misc/net/tun /dev/net/tun
|
|
|
|
|
fi
|
|
|
|
|
# make sure tun device exists
|
|
|
|
|
if [ ! -e /dev/net/tun ]; then
|
|
|
|
|
mkdir -p /dev/net
|
|
|
|
@ -912,18 +931,12 @@ do_pre_init() {
|
|
|
|
|
[ -x /sbin/restorecon ] && /sbin/restorecon /dev/net/tun
|
|
|
|
|
fi
|
|
|
|
|
# workaround for a possible latency caused by udev, sleep max. 10s
|
|
|
|
|
if kernel_is_2_6_or_above ; then
|
|
|
|
|
for x in `seq 100` ; do
|
|
|
|
|
(exec 6<> /dev/net/tun) > /dev/null 2>&1 && break;
|
|
|
|
|
sleep 0.1
|
|
|
|
|
done
|
|
|
|
|
fi
|
|
|
|
|
for x in $(seq 100) ; do
|
|
|
|
|
(exec 6<> /dev/net/tun) > /dev/null 2>&1 && break;
|
|
|
|
|
sleep 0.1
|
|
|
|
|
done
|
|
|
|
|
fi
|
|
|
|
|
elif [ "$OS" = "FreeBSD" ]; then
|
|
|
|
|
if ! kldstat -q -m if_tun > /dev/null; then
|
|
|
|
|
kldload if_tun
|
|
|
|
|
fi
|
|
|
|
|
|
|
|
|
|
elif [ "$OS" = "FreeBSD" -o "$OS" = "DragonFly" ]; then
|
|
|
|
|
if ! ifconfig $TUNDEV > /dev/null; then
|
|
|
|
|
ifconfig $TUNDEV create
|
|
|
|
|
fi
|
|
|
|
@ -1054,7 +1067,10 @@ do_disconnect() {
|
|
|
|
|
eval NETWORK="\${CISCO_SPLIT_EXC_${i}_ADDR}"
|
|
|
|
|
eval NETMASK="\${CISCO_SPLIT_EXC_${i}_MASK}"
|
|
|
|
|
eval NETMASKLEN="\${CISCO_SPLIT_EXC_${i}_MASKLEN}"
|
|
|
|
|
del_exclude_route "$NETWORK" "$NETMASK" "$NETMASKLEN"
|
|
|
|
|
case "$NETWORK" in
|
|
|
|
|
0.*|127.*|169.254.*) ;; # ignoring non-forwardable exclude route
|
|
|
|
|
*) del_exclude_route "$NETWORK" "$NETMASK" "$NETMASKLEN" ;;
|
|
|
|
|
esac
|
|
|
|
|
i=`expr $i + 1`
|
|
|
|
|
done
|
|
|
|
|
fi
|
|
|
|
@ -1105,23 +1121,32 @@ do_disconnect() {
|
|
|
|
|
if [ -n "$INTERNAL_IP6_NETMASK" ]; then
|
|
|
|
|
$IPROUTE -6 addr del $INTERNAL_IP6_NETMASK dev $TUNDEV
|
|
|
|
|
fi
|
|
|
|
|
$IPROUTE link set dev "$TUNDEV" down
|
|
|
|
|
else
|
|
|
|
|
if [ -n "$INTERNAL_IP4_ADDRESS" ]; then
|
|
|
|
|
ifconfig "$TUNDEV" 0.0.0.0
|
|
|
|
|
ifconfig "$TUNDEV" `ifconfig_syntax_del "$INTERNAL_IP4_ADDRESS"`
|
|
|
|
|
fi
|
|
|
|
|
if [ -n "$INTERNAL_IP6_ADDRESS" ] && [ -z "$INTERNAL_IP6_NETMASK" ]; then
|
|
|
|
|
INTERNAL_IP6_NETMASK="$INTERNAL_IP6_ADDRESS/128"
|
|
|
|
|
fi
|
|
|
|
|
if [ -n "$INTERNAL_IP6_NETMASK" ]; then
|
|
|
|
|
ifconfig "$TUNDEV" inet6 $ifconfig_syntax_del $INTERNAL_IP6_NETMASK
|
|
|
|
|
ifconfig "$TUNDEV" `ifconfig_syntax_del "$INTERNAL_IP6_NETMASK"`
|
|
|
|
|
fi
|
|
|
|
|
ifconfig "$TUNDEV" down
|
|
|
|
|
fi
|
|
|
|
|
|
|
|
|
|
destroy_tun_device
|
|
|
|
|
case "$OS" in
|
|
|
|
|
NetBSD|OpenBSD) # and probably others...
|
|
|
|
|
ifconfig "$TUNDEV" destroy
|
|
|
|
|
;;
|
|
|
|
|
FreeBSD|DragonFly)
|
|
|
|
|
ifconfig "$TUNDEV" destroy > /dev/null 2>&1 &
|
|
|
|
|
;;
|
|
|
|
|
esac
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
do_attempt_reconnect() {
|
|
|
|
|
set_vpngateway_route_attempt_reconnect
|
|
|
|
|
set_vpngateway_route
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#### Main
|
|
|
|
|